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Recent research investigates the decode-and-forward (DF) relaying for mixed radio frequency (RF) and terahertz (THz) wireless links with zero-boresight pointing errors. In this letter, we analyze the performance of a fixed-gain…

Information Theory · Computer Science 2021-12-06 Pranay Bhardwaj , S. M. Zafaruddin

Given the critical dependence of broadcast channels by the accuracy of channel state information at the transmitter (CSIT), we develop a general downlink model with zero-forcing (ZF) precoding, applied in realistic heterogeneous cellular…

Information Theory · Computer Science 2017-06-19 Anastasios Papazafeiropoulos , Tharm Ratnarajah

Numerous studies claim that terahertz (THz) communication will be an essential piece of sixth-generation wireless communication systems. Its promising potential also comes with major challenges, in particular the reduced coverage due to…

Information Theory · Computer Science 2022-08-10 Hyesang Cho , Beomsoo Ko , Bruno Clerckx , Junil Choi

In this paper, we characterize the worst-case interference for a finite-area TV white space heterogeneous network using the tools of stochastic geometry. We derive closed-form expressions on the probability distribution function (PDF) and…

Signal Processing · Electrical Eng. & Systems 2019-10-02 Madhukar Deshmukh , S. M. Zafaruddin , Albena Mihovska , Ramjee Prasad

Using tools from stochastic geometry, we develop a framework to model the downlink rate coverage probability of a user in a given small cell network (SCN) with massive MIMO-enabled wireless backhauls. The considered SCN is composed of a…

Information Theory · Computer Science 2017-01-23 Hina Tabassum , Ahmed Hamdi Sakr , Ekram Hossain

From an information theoretic perspective, joint communication and sensing (JCAS) represents a natural generalization of communication network functionality. However, it requires the re-evaluation of network performance from a…

Information Theory · Computer Science 2024-01-17 Nicholas R. Olson , Jeffrey G. Andrews , Robert W. Heath

Terahertz (THz) communication is emerging as a pivotal enabler for 6G and beyond wireless systems owing to its multi-GHz bandwidth. One of its novel applications is in wireless data centers, where it enables ultra-high data rates while…

Information Theory · Computer Science 2025-04-30 Wenqi Zhao , Sergi Abadal , Guochao Song , Jiamo Jiang , Chong Han

This paper provides an analytically tractable framework of investigating the statistical properties of the signal-to-interference power ratio (SIR) with a general distribution in a heterogeneous wireless ad hoc network in which there are K…

Information Theory · Computer Science 2016-08-18 Chun-Hung Liu , Zhu-Kuan Yang , Di-Chun Liang

Achieving seamless global coverage is one of the ultimate goals of space-air-ground integrated network, as a part of which High Altitude Platform (HAP) network can provide wide-area coverage. However, deploying a large number of HAPs will…

Information Theory · Computer Science 2023-06-09 Zhiqing Wei , Lin Wang , Zhan Gao , Huici Wu , Ning Zhang , Kaifeng Han , Zhiyong Feng

Terahertz (THz) frequencies are important for next generation wireless systems due to the advantages in terms of large available bandwidths. On the other hand, the limited range due to high attenuation in these frequencies can be overcome…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Hasan Nayir , Erhan Karakoca , Güneş Karabulut Kurt , Ali Görçin

This paper demonstrates how spectrum up to 1 THz will support mobile communications beyond 5G in the coming decades. Results of rooftop surrogate satellite/tower base station measurements at 140 GHz show the natural isolation between…

Information Theory · Computer Science 2021-07-30 Yunchou Xing , Theodore S. Rappaport

Following the recent progress in Terahertz (THz) signal generation and radiation methods, joint THz communications and sensing applications are shaping the future of wireless systems. Towards this end, THz spectroscopy is expected to be…

Signal Processing · Electrical Eng. & Systems 2022-09-07 Sara Helal , Hadi Sarieddeen , Hayssam Dahrouj , Tareq Y. Al-Naffouri , Mohamed Slim Alouini

This paper presents the vision of multi-band communication networks (MBN) in 6G, where optical and TeraHertz (THz) transmissions will coexist with the conventional radio frequency (RF) spectrum. This paper will first pin-point the…

Information Theory · Computer Science 2023-06-22 Mohammad Amin Saeidi , Hina Tabassum , Mohamed-Slim Alouini

Terahertz (THz) communications open a new frontier for the wireless network thanks to their dramatically wider available bandwidth compared to the current micro-wave and forthcoming millimeter-wave communications. However, due to the short…

Information Theory · Computer Science 2021-01-15 Boyu Ning , Zhi Chen , Wenrong Chen , Yiming Du , Jun Fang

High-rate satellite communications among hundreds and even thousands of satellites deployed at low-Earth orbits (LEO) will be an important element of the forthcoming sixth-generation (6G) of wireless systems beyond 2030. With millimeter…

Networking and Internet Architecture · Computer Science 2024-10-28 Sergi Aliaga , Vitaly Petrov , Josep M. Jornet

We analyze the coverage probability of multi-user uplink cellular networks with fractional power control. We use a stochastic geometry approach where the mobile users are distributed as a Poisson Point Process (PPP), whereas the serving…

Information Theory · Computer Science 2020-04-02 F. Javier Martin-Vega , F. Javier Lopez-Martinez , Gerardo Gomez , Mari Carmen Aguayo-Torres

Densifying the network and deploying more antennas at each access point are two principal ways to boost the capacity of wireless networks. However, due to the complicated distributions of random signal and interference channel gains,…

Information Theory · Computer Science 2017-05-03 Xianghao Yu , Chang Li , Jun Zhang , Khaled B. Letaief

This article focuses on the near-field effect in terahertz (THz) communications and sensing systems. By equipping with extremely large-scale antenna arrays (ELAAs), the near-field region in THz systems can be possibly extended to hundreds…

Information Theory · Computer Science 2023-06-19 Zhaolin Wang , Xidong Mu , Yuanwei Liu

Terahertz (THz) systems have the benefit of high bandwidth and hence are capable of supporting ultra-high data rates, albeit at the cost of high pathloss. Hence they tend to harness high-gain beamforming. Therefore a novel hybrid 3D…

Signal Processing · Electrical Eng. & Systems 2022-02-07 Xufang Wang , Zihuai Lin , Feng Lin , Lajos Hanzo , Life Fellow

Fractional frequency reuse (FFR) is an inter-cell interference coordination scheme that is being actively researched for emerging wireless cellular networks. In this work, we consider hexagonal tessellation based planned FFR deployments,…

Information Theory · Computer Science 2014-01-21 Suman Kumar , Sheetal Kalyani , K. Giridhar